A study of the139La(n, n′γ)139La reaction

Summary

The results of a measurement of the139La(n, n′γ)139La reaction are presented for incident-neutron energies ranging from 1.3 MeV to 2.7 MeV. The levels and the decay scheme of the139La nucleus were determined. Spin and parity assignments are proposed on the basis of extensive comparisons of measured excitation functions with predictions of the statistical theory of the compound nucleus. Our results are compared with those reported in the literature.